public void DebugDrawFixtures(Matrix view, Matrix projection)
{
var context = new Graphics3D.DebugDrawContext(view, projection);
var broadPhase = _world.ContactManager.BroadPhase;
foreach (var body in _world.BodyList)
{
if (!body.Enabled) continue;
foreach (var fixture in body.FixtureList)
{
for (int t = 0; t < fixture.ProxyCount; ++t)
{
var proxy = fixture.Proxies[t];
AABB aabb;
broadPhase.GetFatAABB(proxy.ProxyId, out aabb);
Graphics3D.DebugDrawPolyline(context,
aabb.LowerBound.FromFarseer(),
new Vector2(aabb.LowerBound.X, aabb.UpperBound.Y).FromFarseer(),
aabb.UpperBound.FromFarseer(),
new Vector2(aabb.UpperBound.X, aabb.LowerBound.Y).FromFarseer(),
aabb.LowerBound.FromFarseer());
}
}
}
}
private void CircleGob(Gob gob)
{
var context = new Graphics3D.DebugDrawContext(ViewMatrix, GetProjectionMatrix(gob.Layer.Z));
Graphics3D.DebugDrawCircle(context, new BoundingSphere(new Vector3(gob.Pos, 0), SMALL_GOB_RADIUS));
Graphics3D.DebugDrawPolyline(context, gob.Pos, gob.Pos + SMALL_GOB_RADIUS * AWMathHelper.GetUnitVector2(gob.Rotation));
}
public void DebugDrawBroadPhase(Matrix view, Matrix projection)
{
var context = new Graphics3D.DebugDrawContext(view, projection);
Func<int, Color> getColor = count =>
count <= 0 ? new Color(0f, 0f, 1f) :
count <= 5 ? new Color(0f, 1f, 0f) :
count <= 25 ? new Color(1f, 0.5f, 0f) :
count <= 125 ? new Color(1f, 1f, 0f) :
new Color(1f, 1f, 1f);
Func<AABB, Vector2[]> getVertices = aabb =>
{
var awCenter = aabb.Center.FromFarseer();
var extents = aabb.Extents.FromFarseer();
var reducedExtents = extents - new Vector2((float)Math.Log(extents.X + 1, 1.5), (float)Math.Log(extents.Y + 1, 1.5));
return new[]
{
awCenter - reducedExtents,
awCenter + reducedExtents.MirrorX(),
awCenter + reducedExtents,
awCenter + reducedExtents.MirrorY(),
awCenter - reducedExtents,
};
};
var spansAndElementCounts = new List<Tuple<AABB, int>>();
_world.ContactManager.BroadPhase.GetSpans(ref spansAndElementCounts);
foreach (var aabbAndCount in spansAndElementCounts)
{
context.Color = getColor(aabbAndCount.Item2);
Graphics3D.DebugDrawPolyline(context, getVertices(aabbAndCount.Item1));
}
}